I need some help. Ryleigh likes to bite when she plays, and sometimes she does it randomly. She is now six months old. When she was really little she use to resource guard, but she has stopped that with the help of obedience classes. It seems like I've tried everything. Right now we're leaving the room whenever she bites. It was working for awhile, but now when we come back into the room she runs from where ever she is and bites us again. My mom gets the worst of it. She will also bite randomly like when we're putting on our shoes, talking to some one, or just sitting down. It isn't aggressive because she is wagging her tail, running in circles, and acting all excited. Stuffing a toy in her mouth doesn't work because she wants nothing to do with it when she gets like this. She just spits it out and then comes after our arms or legs. Does anyone have any ideas on how to stop this?